查询词典 gametes

The union of genetically identical gametes,resulting in the formation of a homozygote.

在许多沉积盆地中，地层水的含盐量随深度或压实作用而增高。

The union of genetically identical gametes, resulting in the formation of a homozygote.

他希望，修复不育基因只是治疗镰状细胞性贫血等基因疾病的开始。

Asexual reproduction The formation of new individuals from a ingle parent without the production of gametes or special reproductive structures.

无性生殖：没有配子的产生或者其他特殊的生殖结构产生，直接从父母中的任何一方发育为新个体的生殖方式。

Isogamy The sexual fusion of gametes of similar size and form. It occurs in fungi and some protoctists.

同配生殖：是形态大小相同的配子间进行的有性生殖，发生在真菌和原生生物中。

Karyogamy The fusion of two nuclei that exist within a common cytoplasm, as occurs in the formation of the zygote from two gametes.

核配：同一个细胞中两个核之间的融合现象称为核配，核配发生在两个配子结合成合子的过程中。

2The mother cells of macrospore and microspore directly go mitosis by-passed meiosis to form normally fertility gametes.

分析其主要原因在于：①雌配子不育；②雄配子不育；③雌雄配子之间的亲和性障碍；④雌雄配子发育不同步；⑤单受精。

Meiosis, which occurs only in the form ation of gametes, is a specialized form of cell division

仅仅发生在配子形成中的减数分裂是一种特殊形式的细胞分裂。

The strains may vary morphologically or in the size of the gametes they produce.

菌系可能在形态学上变化很大，或者产生的配子大小各异。

Only the gametes and zoospores are motile.

仅有配子和游动孢子是可以运动的。

Autopoly-ploids may arise from the fusion of diploid gametes that have resulted from the NONDISJUNCTION of chromosomes at meiosis.

同源多倍体通常可能来自在减数分裂过程中染色体不分离导致的二倍体融合。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。